Bharatpur, Feb. 13 : A bomb exploded at the building of the Nepal Electricity Authority Office here last night breaking the window panes, according to the district police office.

According to eye witnesses, four persons were seen running away.

The incident is under police investigation and a search is under way for the alleged terrorists.

Meanwhile, in Nepalgunj some unidentified persons hurled two hand bombs at the land revenue office in Nepalgunj at 6.10 am today, according to police sources.

The bombs, however, did not cause any damage and an inquiry into the incident is going on.

One of the two hand bombs exploded on the roof of the land revenue office, while the other was found inactive at the office premises.

The inactive bomb has been taken by police for investigation.